/Engine/Source/Runtime/SlateCore/Public/Widgets/DeclarativeSyntaxSupport.h
namespace RequiredArgs { template<typename Arg0Type, typename Arg1Type> [T2RequiredArgs](API\Runtime\SlateCore\Widgets\T2RequiredArgs)< Arg0Type &&, Arg1Type && > RequiredArgs::MakeRequiredArgs ( Arg0Type && InArg0, Arg1Type && InArg1 ) }